(VAR x1 )
(RULES 
        2(5(x1)) -> 1(3(3(0(1(0(x1))))))
        2(5(x1)) -> 2(2(0(5(0(1(x1))))))
        3(5(x1)) -> 1(3(2(0(0(1(x1))))))
        3(5(x1)) -> 3(2(0(5(3(0(x1))))))
        4(5(x1)) -> 2(2(1(3(2(1(x1))))))
        4(5(x1)) -> 3(2(0(5(0(0(x1))))))
        1(2(5(x1))) -> 1(0(5(0(5(4(x1))))))
        1(2(5(x1))) -> 1(2(2(1(0(1(x1))))))
        1(2(5(x1))) -> 2(0(1(3(1(0(x1))))))
        1(4(5(x1))) -> 1(2(4(0(2(1(x1))))))
        2(5(1(x1))) -> 2(2(2(1(2(3(x1))))))
        2(5(2(x1))) -> 4(0(2(2(3(3(x1))))))
        2(5(3(x1))) -> 2(0(4(1(3(3(x1))))))
        2(5(4(x1))) -> 2(0(5(1(0(1(x1))))))
        3(2(5(x1))) -> 3(2(0(1(0(5(x1))))))
        3(4(2(x1))) -> 3(4(0(2(2(2(x1))))))
        3(5(1(x1))) -> 0(4(2(0(0(5(x1))))))
        3(5(1(x1))) -> 0(4(2(2(3(4(x1))))))
        3(5(1(x1))) -> 2(1(4(1(0(1(x1))))))
        3(5(2(x1))) -> 0(4(3(2(2(2(x1))))))
        3(5(2(x1))) -> 2(0(2(2(3(0(x1))))))
        3(5(2(x1))) -> 2(3(3(2(1(2(x1))))))
        3(5(3(x1))) -> 0(2(4(3(3(0(x1))))))
        3(5(3(x1))) -> 0(5(4(3(3(0(x1))))))
        3(5(3(x1))) -> 2(3(4(0(4(2(x1))))))
        3(5(4(x1))) -> 0(2(0(5(0(0(x1))))))
        3(5(4(x1))) -> 0(5(0(0(1(2(x1))))))
        3(5(5(x1))) -> 0(5(4(1(0(5(x1))))))
        4(5(1(x1))) -> 2(1(0(5(3(3(x1))))))
        4(5(2(x1))) -> 0(5(1(0(0(4(x1))))))
        4(5(4(x1))) -> 2(2(1(0(4(2(x1))))))
        4(5(4(x1))) -> 3(2(0(3(2(0(x1))))))
        5(5(3(x1))) -> 5(1(0(1(2(2(x1))))))
        5(5(4(x1))) -> 5(1(0(4(2(2(x1))))))
        
)